Typographical machine



' y R. R. MEAD TYPOGRAPHICAL MACHINE 3 Shets-Sheet 1 Filed Dec. 31, 1957INVENTOR W m May 9,1939. IR. R. MEAD 2,157,795

TYPOGRAPHICAL MACHINE Filed Dec. 31, 1957 3 Sheets-Sheet 2 INVENTORPatented May 9, 1939 UNITED STATES TYPOGRAPHICAL MACHINE Richard R.Mead, Queens Village, N. Y., assignor to Mergenthaler Linotype Company,a corporation of New York Application December 31, 1937, Serial No.182,691

20 Claims.

This invention relates to typographical machines, such as Linotypemachines of the general organization represented in Letters Patent ofthe United States, No. 436,532, to O. Mergenthaler, wherein circulatingmatrices are released from a magazine in the order in which theircharacters are to appear in print and then assembled in line, thecomposed line transferred to the face of a mold, the mold filled withmolten metal to form a slug or Linotype against the matrices whichproduce the type characters thereon, and the matrices thereafterelevated and returned through distributing mechanism to the magazinefrom which they started.

More particularly, it relates to machines equipped with a plurality ofmagazines containing different matrix fonts and which are arranged to bemoved upwardly and downwardly in the machine to bring one or anotherinto operative relation to the assembling and distributing mechanisms.In such machines, the magazines are independently removable andreplaceable and, to this end, are arranged to be spread apart in orderto permit access to the magazine to be removed which, for this purpose,is first located in operative position. Provision is also made forraising the magazine to be removed clear of its supporting base frameand escapement mechanism, as well as the assembler throat, so that itmay be drawn forwardly by the operator and supported in a verticalposition at the front of the machine on arms pivotally arranged thereonand adapted to be swung into a position wherein they will support themagazine in the manner stated. The replacement of a magazine is effectedby reversing these operations.

According to the present improvements, the pivotally mounted arms onwhich the magazines are supported at the front of the machine arepermanently secured on the machine frame and normally located in aninoperative position alongside of the bank of magazines. As the magazineto be removed is located in operative position, mechanism associatedtherewith is automatically brought into operative relation with devicesoperated by one of the pivoted arms, so that, as the arms are swungforwardly into their active magazine supporting positions at the frontof the machine, such magazine (1. e., the one to be removed) will belifted off its supporting base frame into a position wherein it Willclear its associated escapement mechanism and the assembler throatduring removal from the machine. And likewise, in the case of areplacement magazine, the return movement of the pivoted arms toinactive position will lower such magazine onto its supporting baseframe, wherein it will be properly located with respect to itsescapement mechanism.

Also, in accordance with the invention, safety devices are provided forlocking the pivoted arms against movement until the magazines have beenproperly spread to permit the removal of the selected one, and also toinsure that the matrices are locked in the selected magazine prior toits disengagement from its escapement mechanism.

Referring to the drawings:

Fig. 1 is a side elevation of the magazine structure of a linotypemachine equipped with the present improvements;

Fig. 2 is a View similar to Fig. 1, but with the magazine supportingarms shown in active position and with a magazine raised off itssupporting base frame and ready to be removed;

Figs. 3, 4 and 5 are sectional views taken respectively on lines 33, 4-4and 5-5 of Fig. 1.

The matrices are stored according to font in in the superposed channeledmagazines A, four of which are shown herein but of which a greater orless number might be employed, if desired. The several magazines areremovably supported upon separate base frames A conj ointly constitutinga shift frame which is arranged to be moved upwardly and downwardly inthe fixed machine frame in the well known manner to bring any selectedmagazine into operative relation to the assembling mechanism B at thelower end and the distributing mechanism (not shown) at the upper end.Each of the magazines is provided with a series of matrix releasingescapements D which, when the magazine is brought into operativeposition, are actuated under the control of the keyboard mechanism inthe usual way. In the present instance, the three upper base frames Aare pivoted at. their upper ends, as at A to a pair of plates A risingfrom the lowermost base frame, so that the base frames and theirrespective magazines may be separated or spread apart to permit theindependent removal of any selected magazine. Such separation of themagazines is effected by means of a hand lever J fixed to a transverserock shaft J journalled in the lowermost base frame and provided at itsopposite ends with arms J connected by links J to the uppermost baseframe (the arms J and links J constituting toggle joints) and two pairsof lifting links or hooks J and J pivotally suspended one pair from eachside of the uppermost base frame and formed in their front edges withnotches J and J. The hooks J and J are arranged to be turned about theirpivotal axes so as to move their notches into and out of operativerelation, respectively, with studs (1 and a protruding from the sides ofthe magazine base frames that support the second and third magazinesfrom the top.

According to this arrangement, when it is desired to remove the secondmagazine from the top, both pairs of links J and J are held rearwardlyas shown in Fig. 1, so that, as the hand lever J is pulled forwardlyfrom its upper vertical position to its lower position, the togglejoints (consisting of the arms J and links J will be straightened out toraise only the upper base frame, so that access may be had to saidsecond magazine. If the third magazine is the one desired to be removed,the upper pair of links J is moved so as to bring the notches J in theforward edges thereof into engagement with the studs a associated withthe supporting base frame of the second magazine, so that, as the handlever J is pulled forwardly, the supporting base frame of the secondmagazine will be raised, together with the top one, thus giving accessto the third magazine. And similarly, if the lower magazine is the onedesired to be removed, both pairs of links J and J are moved, so as tobring the notches J J therein into engagement with the studs (1, aassociated with the supporting base frames of the second and thirdmagazines, so that, upon the operation of the hand lever J, all threeupper magazines will be raised, thus giving access to the lowermostmagazine. The return movement of the hand lever J to its normal uprightposition will restore the base frames, and consequently the magazines,to normal position after the replacement of a magazine has been made.

At this point, it might be observed that the links J and J are formed intheir rear edges with laterally projecting lips J and J which overlapone another, the lips J associated with the longer links J 5 beinglocated at the rear of the lips J associated with the links J, thearrangement being such that, as the links J are moved into engagementwith the studs 11. associated with the base frame of the third magazine,the links J will automatically be brought into operative relation withthe studs a associated with the base frame of the second magazine. Thearrangement also facilitates the disengagement of the upper pair oflinks J from the studs a or both pairs of links J and J from theirrespective studs a and (.2 depending upon whether the one pair or bothpairs have been operative, merely by moving the upper pair of links toinoperative position, as a result of the overlapping relation of thelips J J just described. The toggle and link arrangement for spreadingthe magazines is similar to that described in the Southern Patent No.1,816,094, and reference may be had thereto for a further description ofthe parts.

As best shown in Figs. 1 and 2, each bank of escapements D is mounted inthe usual manner in a supporting bar or frame D which frame is securedor otherwise fastened to the lower side of the corresponding base frameA As ordinarily, the magazines are formed on their'undersides withtransverse slots or openings to receive the escapement bars, the latterbeing formed on their upper sides with grooves which extend across themagazine openings and constitute in effect continuations of the groovesin the bottom plates of the magazines. Such being the relation of theparts, it is apparent that before a magazine can be removed, it mustfirst be disengaged from its escapement bank. For this reason, each baseframe is provided with a central magazine lifting and supporting plate E(see Figs. 1, 2 and 3), which in the present instance is substantiallyas long as the base frame itself and which is located in a correspondinggroove or recess E formed in the upper side of the base frame. At itsupper end, the plate E is pivoted to the base frame as at E thuspermitting it to be swung upwardly in lifting the magazine; and at itslower end, it is provided with a stop shoulder E normally engaged withthe customary forward transverse rib a on the underside of the magazineand which thus retains the magazine in place on the plate when thelatter is in its raised position.

In the embodiment illustrated, the swinging of the magazine lifting andsupporting plate of each base frame is controlled and effected by a camor equivalent device F, arranged near the lower end thereof and fast toa transverse rock shaft F journalled in the base frame. This cam (Fig.2) is provided with a notched or hook shaped piece F adapted, when thecam is turned upwardly, to engage a pin F on the edge of the plate Eand. thus lock the latter in its proper raised position. The cam islimited in its downward movement by a stop lug F on the base frame, theplate E in its lowered position resting upon the base frame at thebottom of the containing groove E The parts as thus far described andtheir mode of operation are or may be substantially as illustrated inthe McNamara Patent No. 1,586,316, or in the Southern patent, heretoforealluded to.

According to the present invention, the transverse rock shafts F foroperating the cams F which raise and lower the magazines with respect totheir supporting base frames are operated by a common device, the shaftsbeing provided with means which is automatically coupled with suchdevice for operation thereby as the respective magazines are moved intooperative position, it being recalled that a magazine must be moved intooperative position in order to be removed.

As shown in Figs. 3 and 4, the common device referred to includes inpart a short stub shaft G journalled in a bracket H fixed at the left ofthe machine and in coaxial alinement with the rock shaft F associatedwith the magazine in operative position. At the right end of the shaftG, there is pinned a collar G formed in its face with a groove G which,in the normal position of the parts, extends in the direction ofmovement of the shift frame. At the left end of each rock shaft F thereis pinned a collar F formed with a tongue F which is in alinement withthe groove G when its associated magazine is resting on its base frame.Consequently, as a magazine is raised or lowered into operativeposition, the tongue F of its associated rock shaft will enter into thegroove G formed in the collar G thus effectively coupling the rock shaftF and the stub shaft G together. If the shaft G is now turned in acounterclockwise direction. looking at the parts from the right, thecoupled rock shaft F will likewise be turned thereby in the samedirection to raise its supporting plate E and lift the correspondingmagazine off its base frame. And similarly, when a replacement magazinehas been located on the supporting plate E, the return movement of thestub shaft G to its normal position will lower such magazine onto thesupporting base frame and into engagement with the escapement bank, allin the manner previously described.

The stub shaft G is operated by an arm K pivotally mounted at the topfront of the fixed bracket H, through connections which include a link Kconnected at one end to the arm by a headed pin K threaded into the armand passing through a slot K formed in said link. The connectionsfurther include a small crank arm G pinned to the stub shaft G andpivotally connected at its end to the lower end of the link K Accordingto this arrangement, when the arm K is moved from the position shown inFig. l to the position shown in Fig. 2, the stub shaft G, through theconnections just described, will be rotated through an angle of 90 tolift the magazine in operative position off its base frame through themedium of its supporting plate E, to a position wherein the magazine canbe removed and, when the arm K is turned back from the position shown inFig. 2 to the position shown in Fig. l, a replacement magazinepreviously located on the supporting plate E will be lowered intooperative position on the base frame. At this point, it might be statedthat the arm Gr includes a cup-shaped hub portion (Figs. 3 and 4) whichhouses a torsion spring Gr acting to urge the arm against a stop Gpresented at the base of a slot H formed in the fixed bracket H andthrough which a portion of the arm extends. The purpose of this is toinsure the proper alinement of the groove G with the tongues I when theparts are in normal position.

While the arm K for operating the shaft G could be of any suitableconstruction, it is pro posed, in accordance with the present invention,to use it as one of a pair of arms for supporting the magazines at thefront of the machine during the removal and replacement operations and,to this end, the arm is formed with a centrally disposed rib K which, inthe forward or active position of the arm, is located in alinement withthe supporting plate E of the magazine in operative position, i. e.,when the supporting plate E is in its raised position, as shown in Fig.2. The arm K is located in this position by a lug K with which it isprovided and which banks against a shoulder presented by the fixedbracket H in which it is pivoted. It will be observed that the arm K isequipped with a handle k to aid the operator in moving it to activeposition. The machine is also equipped with a similar arm K at theright, constituting the other arm of the pair, and which is pivotallymounted in a fixed bracket H and formed with a lug K cooperating with ashoulder in the bracket for locating it in its forward position for thesupport of the magazines during removal and replacement. When turnedrearwardly to its inoperative position, the arm K rests upon a pin Hextending inwardly from its supporting bracket H Both arms at theirforward ends present shoulders K to engage the ends of a cross rib (13with which the magazines are provided near their upper ends to supportthem in a vertical position at the front of the machine during removaland replacement. In other words, except for the handle k, the manner inwhich it is supported in its inactive position, and except also for thefact that it does not enter into the raising and lowering of themagazines with respect to their supporting base frames, the arm K is inall respects similar to the arm K.

The pin and slot connection between the arm K and the link K provides adegree of lost motion which permits the arm to occupy an inconspicuousposition at the side of the bank of magazines, where it is out of theway. To compensate for this lost motion and to insure a smooth action ofthe parts in lowering a magazine upon its base frame, there is providedan auxiliary link K pivotally connected at its lower end to the link Kand supported at its free end by means of a stud K (see Figs. 1 and 3)resting upon the upper edge of the bracket H and adapted to engage thehead of the pivot pin K in the arm K when the latter is swung to itsforward position. According to this arrangement, as the arm K is turnedrearwardly to its inactive position, it will, through the pin K actpositively and continuously on the auxiliary arm during the intervalthat the lost motion between the arm K and the link K is being taken up.

It will be observed that, when the magazines are elevated out ofengagement with their corresponding escapements, the contained matriceswould be free to pass therefrom unless they were first locked therein,and hence means are provided to prevent the operation of the stub shaftG until the matrices have been locked in the magazine. In the presentinstance (see particularly Figs. 1, 3 and 4), such means comprise, foreach magazine, a centrally pivoted latch L mounted in the left handprojection of the escapement bar D and an upright arm G fast to thecollar G which contains the groove G that cooperates with the tongue Fassociated with each of the rock shafts. The latch is normally held inthe path of the arm G by a spring (not shown), so as to lock the stubshaft against rotation, but the latch is arranged to be disengaged fromthe arm by the usual matrix locking rod M which is inserted through theedge of the magazine in the customary way. This matrix locking rod, asit is pushed home, engages the front end of the locking latch L andlocks it against the action of its associated spring clear of the arm GWhen the matrices-are thus locked in the magazine, the stub shaft isfree to be rotated to swing the magazine upwardly out of engagement withthe escapements preparatory to removal. In place of the detachablematrix locking rod, the magazines may be provided with permanent lookingrods, such as shown and described in the Kennedy Patent No. 1,347,638,which are shiftable in an endwise direction to lock or unlock thematrices.

A safety device is also provided for locking the magazine supporting armK against movement in the event the magazines have not been properlyspread preparatory to the removing operation. Such means (see Figs. 3and 5) include a pawl N controlled by lugs N protruding laterally fromthe sides of the magazine base frames, that is, all of the base frames,with the exception of the lowermost one. This pawl is pivoted on thefixed bracket H and, in the normal position of the parts, is adapted tobe engaged by the lug N associated with the base frame of the magazinenext above that in removal position. When thus engaged by the lug N anose portion N on the pawl protrudes into a recess k formed in the arm Kand is held therein against the tension of a small pull spring Nfastened to the pawl at its lower end, thus locking the arm againstmovement (see the dotted line position of the parts in Fig. 5). However,during the spreading operation, the lug N passes out of engagement withthe pawl N, thus permitting the latter to be moved under the action ofthe spring N out of engagement with the arm K, i. e., to the positionshown in solid lines in Fig. 5. In this position of the parts, the arm Kis free to be swung forward to its active position to raise the magazinein operative position off its base frame, so that it can be removed, allin the manner hereinbefore described.

It is believed that the operation of the parts will be entirely clearfrom the foregoing description. However, to recapitulate, it may bestated that in removing any selected magazine, such magazine is firstbrought into operative position, thus automatically coupling the rockshaft F associated with its supporting base frame with the stub shaft G.Next, the magazines are spread apart so as to give access to themagazine to be removed, this operation effecting the release of the armK by the pawl N. The matrix locking rod M is inserted through the edgeof the magazine in well known manner and, as it is pushed home, itoperates the releasing pawl L to free the stub shaft for rotation. Themagazine supporting arms are now swung to their forward or activeposition and, as the arm at the left is actuated, the plate E, throughthe stub shaft G, and the respective rock shaft F is moved upwardly tolift the magazine out of engagement with the escapements, that is, tothe position shown in Fig. 2. The magazine is then free to be slidforwardly onto the supporting arms and removed in the customary way, asindicated by the dotted lines in Fig. 2. In substituting a new magazine,the above operations are simply reversed, that is to say, after slidingthe substitute magazine back onto the lifting and supporting plate E,the supporting arms are moved rearwardly to their inactive positionsand, as the arm at the left is thus moved, the substitute magazine islowered into engagement with the escapements, which, of course, remainin place upon the base frame, and the matrix locking rod then withdrawnto permit the matrices to be released from the magazine when in use. Thehand lever J is then operated to restore the magazines which were spreadapart back to their normal positions.

In the accompanying drawings, the invention has been shown merely by wayof example and in preferred form, and obviously many variations andmodifications may be made therein which will still be comprised withinits spirit. It is to be understood, therefore, that the -invention isnot limited to any specific form or embodiment, except insofar as suchlimitations are specified in the appended claims.

Having thus described my invention, what I claim is:

1. A typographical machine including, in combination, a shift frame, aplurality of independently removable matrix magazines carried by saidframe, a corresponding plurality of escapement banks mounted in theshift frame in operative engagement with the magazines, mechanismscarried by the shift frame in association with each magazine for liftingthe individual magazines out of engagement with their correspondingescapement banks preparatory to removal or replacement, and commondevices mounted on a relatively fixed part of the machine forselectively operating the respective magazine lifting mechanisms.

2. A typographical machine including, in combination, a shift frame, aplurality of independently removable matrix magazines carried by saidframe, a corresponding plurality of escapement banks mounted in theshift frame in operative engagement with the magazines, mechanismscarried by the shift frame in association with each magazine for liftingthe individual magazines out of engagement with their correspondingescapement banks preparatory to removal or replacement, and commondevices mounted on a relatively fixed part of the machine and includinga pivotally mounted arm for selectively operating the respectivemagazine lifting mechanisms.

3. A typographical machine including, in combination, a shift frame, aplurality of independently removable matrix magazines carried by saidframe, a corresponding plurality of escapement banks mounted in theshift frame in operative engagement with the magazines, mechanismscarried by the shift frame in association with each magazine for liftingthe individual magazines out of engagement with their correspondingescapement banks preparatory to removal or replacement, means mounted ona relatively fixed part of the machine and movable from an inactive toan active position for the support of a removed or a replacementmagazine, and common devices actuated by said means for selectivelyoperating the respective magazine lifting mechanisms.

4. A typographical machine including, in combination, a shift frame, aplurality of independently removable matrix magazines carried by saidframe, a corresponding plurality of escapement banks mounted in theshift frame in operative engagement with the magazines, mechanismscarried by the shift frame in association with each magazine for liftingthe individual magazines out of engagement with their correspondingescapement banks preparatory to removal or replacement, a pair of armspivotally mounted on relatively fixed parts of the machine and movablefrom an inactive to an active position for the support of a removed or areplacement magazine, and common devices actuated by at least one ofsaid arms for selectively operating the respective magazine liftingmechanisms.

5. A typographical machine including, in combination, a plurality ofmatrix magazines, a shift frame wherein the magazines are supported forindependent removal and movable to bring one or another of the magazinesinto operative position, a corresponding plurality of escapement banksmounted in the shift frame in operative engagement with the magazines,mechanisms carried by the shift frame in association with each magazinefor lifting the individual magazines out of engagement with theircorresponding escapement banks preparatory to removal or replacement,and common devices for operating said mechanisms and arranged to beconnected automatically to any one thereof as the corresponding magazineis moved into operative position.

6. A typographical machine including, in combination, a plurality ofmatrix magazines, a shift frame wherein the magazines are supported forindependent removal and movable to bring one or another of the magazinesinto operative position, a corresponding plurality of escapement banksmounted in the shift frame in operative engagement with the magazines,mechanisms carried by the shift frame in association with each magazinefor lifting the individual magazines out of engagement with theircorresponding escapement banks preparatory to removal or replacement,and devices mounted on the machine amass and arranged to -be connectedautomatically for the selective operation of any one of said mechanismsby the movement 'of the corresponding magazine into operative position.

7. A combination according to 'claim 1, wherein the shift frame includesa supporting b'as'e frame for each magazine and on which the escapementbank and the magazine lifting mechanism for such magazine are mounted.

8. A combination according to claim 5, wherein the machine is providedwith means movable from an inactive to an active position, wherein tosupport a removed or a replacement magazine and. arranged during suchmovement, to actuate the devices for operating the magazine liftingmechanisms.

9. A typographical machine including, in combination, a plurality ofmatrix magazines, a shift frame therefor comprising a plurality of baseframes upon which the respective magazines are removably supported,escapement banks mounted upon the respective base frames in operativeengagement with the magazines, mechanism in cluding a rock shaft carriedby each base frame for lifting the corresponding magazine therefrom todisengage it from the escapement bank preparatory to its removal orreplacement, a stub shaft common to all of the rock shafts and arrangedto be coupled to any selected one thereof, and means for rotating thestub shaft to operate the magazine lifting mechanism corresponding tothe rock shaft coupled thereto.

10. A typographical machine including, in combination, a plurality ofmatrix magazines, a shift frame therefor comprising a plurality of baseframes upon which the respective magazines are removably supported,escapement banks mounted upon the respective base frames in operativeengagement with the magazines, mechanism including a rock shaft carriedby each base frame for lifting the corresponding magazine therefrom todisengage it from the escapement bank preparatory to its removal orreplacement, a stub shaft common to all of the rock shafts and arrangedto be coupled to any selected one thereof as the shift frame is moved tobring such rock shaft into axial alinement with the stub shaft, andmeans for rotating the stub shaft to operate the magazine liftingmechanism corresponding to the rock shaft coupled thereto.

11. A combination according to claim 9, Wherein the means for rotatingthe stub shaft includes a pivotally mounted arm arranged at the side ofthe machine.

12. A combination according to claim 9, where in the means for rotatingthe stub shaft includes at least one of the plurality of arms arrangedto be swung from an inactive position to an active position at the frontof the machine for the support of a magazine during removal orreplacement.

13. A typographical machine including, in combination, a shift frame, aplurality of independently removable matrix magazines carried by saidframe, a corresponding plurality of escapement banks mounted in theshift frame in operative engagement with the magazines, means carried bythe shift frame in association with each magazine for lifting theindividual magazines out of engagement with their correspondingescapement banks preparatory to removal or replacement, means forlocking the matrices in each magazine, a common device mounted on arelatively fixed part of the machine for selectively operating theindividual magazine lifting means,

and means for preventing the operation of said common de'vi'ce until thematrices have first been locked in the selected magazine.

14. A typographical machine including, in combination, a shift frame, aplurality of independently removable matrix magazines carried by saidframe, a corresponding plurality of escapement banks mounted in theshift frame in operative engagement with the magazines, means carried bythe shift frame in association with each magazine for lifting theindividual magazines out of engagement with their correspondingescapement banks preparatory to removal or replacement, means forlocking the matrices in each magazine, a common device mounted on arelatively fixed part of the machine for selectively operating theindividual magazine lifting means, and means including a latch memberassociated with each magazine and adapted when the lifting mechanism ofthe selected magazine is connected for operation by the common device toprevent the operation thereof until the matrices have first been lockedin such magazine.

15. A typographical machine including, in combination, a plurality ofmatrix magazines, a shift frame therefor comprising a plurality of baseframes upon which the respective magazines are removably supported,escapement banks mounted upon the respective base frames in operativeengagement with the magazines, mechanism including a rock shaft carriedby each base frame for lifting the corresponding magazine therefrom todisengage it from the escapement bank preparatory to its removal orreplacement, a stub shaft common to all of the rock shafts and arrangedto be coupled to any selected one thereof, means for rotating the stubshaft to operate the magazine lifting mechanism corresponding to therock shaft coupled thereto, and means for preventing the operation ofthe stub shaft until the matrices have first been locked in the magazineto be lifted.

16. A typographical machine including, in combination, a shift frame, aplurality of independently removable matrix magazines carried by saidframe, a corresponding plurality of escapement banks mounted in theshift frame in operative engagement with the magazines, means carried bythe shift frame in association with each magazine for lifting theindividual magazines out of engagement with their correspondingescapement banks preparatory to removal or replacement, mechanism forseparating the magazines to permit the operation of the magazine liftingmeans, a common device mounted on a relatively fixed part of the machineand arranged to be selectively coupled for operating the individualmagazine lifting means, and means for preventing the operation of saiddevice until the magazine next above the one to be lifted by theoperation thereof has been separated from said magazine.

17. A typographical composing machine ineluding, in combination, aplurality of matrix magazines, a shift frame therefor comprising aplurality of base frames upon which the respective magazines areremovab-ly supported, escapement banks mounted upon the respective baseframes in operative engagement with the magazines, means carried by eachbase frame for lifting the corresponding magazine therefrom to disengageit from the escapement bank preparatory to its removal or replacement,mechanism for separating the base frames to permit the operation of themagazine lifting means, a common device mounted on a relatively fixedpart of the machine and arranged to be selectively coupled for operatingthe individual magazine lifting means, and means including elementsmounted on the base frames for preventing the operation of said deviceuntil the base frame next above the magazine to be lifted by theoperation thereof has been separated from said magazine.

18. A combination according to claim 17, wherein the common device isoperated by an arm pivotally mounted on the machine and wherein themeans for preventing the operation thereof includes a pawl arranged tolock said arm against operation until the base frame next above themagazine to be lifted has been separated therefrom.

19. A typographical machine including, in combination, a matrixmagazine, a base frame upon which the magazine is removably' supported,an escapement bank mounted upon the base frame in operative engagementwith the magazine, mechanism carried by the base frame for lifting themagazine therefrom to disengage it from the escapement bank preparatoryto its removal or replacement, means mounted on the machine frame forsupporting the magazine during removal or replacement and including apivotally mounted arm movable between inactive and active positions,and. means comprising a lost motion connection between the arm and themagazine lifting mechanism for operating said lifting mechanism to raisethe magazine as the arm is moved to active position and to lower themagazine as the arm is moved to inactive position while permitting thearm in its inactive position to remain out of the way.

20. A combination according to claim 19, wherein there is providedauxiliary means associated with the lost motion connection positively toeffect the lowering of the magazine as the lost motion in the connectionis taken up during the return movement of the arm to inactive position.20

RICHARD R. MEAD.

